-18/35
is the answer hope I am helpful
Step-by-step explanation:
the lowest common denominator (LCD) is the lowest common multiple (LCM) of the denominator numbers (the ones at the bottom of the fractions).
finding the LCM of 9 and 12 using the prime factor method :
9 = 3×3
12 = 2×2×3
the LCM is the combination of the longest chains per prime factor. which means we have 2×2 and 3×3 as longest chains for 2 and 3.
LCD = LCM = 2×2×3×3 = 36
2/9 turns into x/36 by multiplying by 4/4 :
2/9 × 4/4 = 8/36
5/12 turns into x/36 by multiplying by 3/3 :
5/12 × 3/3 = 15/36
so, the third answer option is correct.
Answer: 98
Step-by-step explanation:
Answer:
210
Step-by-step explanation:
Rewriting input as fractions if necessary:
4/7, 5/14, 4/15
For the denominators (7, 14, 15) the least common multiple (LCM) is 210.
LCM(7, 14, 15)
Therefore, the least common denominator (LCD) is 210.
Calculations to rewrite the original inputs as equivalent fractions with the LCD:
4/7 = 4/7 × 30/30 = 120/210
5/14 = 5/14 × 15/15 = 75/210
4/15 = 4/15 × 14/14 = 56/210
